was cruising lake at WOT and it shut down to 3000 rpm.spark ok, getting fuel,compression all 110.took spark arrester off and revved it up and it was spitting gas out of bottom carb.took induction block off and it had 1 reed petal broke off on bottom cylinder.got lucky and found broken piece in port.have new reeds and gaskets ordered.Would this be enough to cause it to lose that much RPM?
